Community WC of Green Valley

Community Water Company of Green Valley is a nonprofit water provider serving residents in unincorporated Pima County and the Town of Sahuarita. In 2017, the company delivered approximately 18 million gallons of water daily to around 22,000 residents (about 100 gallons per person daily).

The service area spans roughly eight square miles, bounded by Anamax Road to the north, Santa Cruz River to the east, Freeport-McMoRan mine to the west, and Mission Twin Buttes Road to the south. Their team of dedicated employees focuses primarily on providing reliable water delivery that meets all applicable quality standards.

Our Water Source
Community Water Company draws groundwater from the Tucson Basin Aquifer, a compressed permeable geologic formation capable of transmitting groundwater. This aquifer serves as the primary water source for all of Green Valley, portions of Tucson, and surrounding communities. Various users including private wells, municipal systems, agricultural operations, and commercial entities access this shared resource.

After pumping groundwater from the aquifer, it's stored in reservoirs and chlorinated to protect against bacterial contamination before distribution through the water system. Your water may come from any individual well or a combination of wells.

Source Water Assessment
Based on current information about hydrogeologic settings and nearby land usage within specified proximity to our public water system sources, the department has designated our water supply as low-risk. This indicates that most source water protection measures are either already implemented, or that the hydrogeology is such that additional protection measures would have minimal impact.

Protecting Our Water Supply
Proper disposal of household chemicals and automotive waste helps minimize groundwater contamination risk by reducing runoff and leaching potential. For more information, contact Pima County landfills at (520) 690-5749. Hazardous waste collections occur periodically in the Green Valley/Sahuarita area annually. Contact the Green Valley Council at (520) 648-1936 for collection dates, times, and locations.

Water Quality and Contaminants
The Arizona Department of Environmental Quality follows EPA standards to regulate contaminant levels in public water systems. The FDA establishes similar limits for bottled water to ensure comparable public health protection. All water sources may contain natural or human-introduced contaminants, including:

• Microbial contaminants from sewage treatment plants, septic systems, agricultural operations, and wildlife
• Organic chemical contaminants from industrial processes, petroleum production, gas stations, urban runoff, and septic systems
• Inorganic contaminants including naturally-occurring salts and minerals or those from urban runoff, sewage, oil/gas production, mining, or farming
• Pesticides and herbicides from agriculture, urban runoff, and residential uses
• Radioactive contaminants that occur naturally or result from oil/gas production and mining

All water, including bottled water, may reasonably contain at least small amounts of some contaminants. Their presence doesn't necessarily indicate a health risk. For more information about contaminants and potential health effects, call the EPA Safe Drinking Water Hotline at (800) 426-4791. For bottled water information, contact the FDA at (888) 723-3366.

Health Effects Information
Nitrate levels above 10 ppm pose health risks for infants under six months old, potentially causing "blue baby syndrome." Nitrate levels can rise rapidly due to rainfall or agricultural activity. If caring for an infant and detected nitrate levels exceed 5 ppm, consult your doctor.

Arsenic levels at or below the MCL of 10 ppb meet EPA standards. EPA continuously researches health effects of low arsenic levels, which can cause cancer at high concentrations and is linked to skin damage and circulatory problems.

Elevated lead levels can seriously affect pregnant women and young children. Lead primarily enters water through service line and residential plumbing materials. Community Water Company provides quality water but cannot control plumbing component materials. To minimize potential lead exposure, flush your tap for 30 seconds to 2 minutes before using water for drinking or cooking if it has been sitting in pipes for several hours. Those concerned about lead can have their water tested. Information about lead in drinking water is available from the Safe Drinking Water Hotline or at www.epa.gov/safewater/lead.

Testing Results Summary
Our water met all primary federal and state drinking water standards during 2017. We regularly monitor for over 80 constituents according to schedules determined by regulations. These compliance periods vary by contaminant type and likelihood of result variation year to year. Radiochemical testing occurs every six years, lead and copper every three years, and asbestos every nine years. Coliform bacteria samples are collected twice monthly.

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